Corrections have been issued by roads bosses to their consultation about the proposed A27 Arundel bypass.
The series of mistakes by Highways England about the six options concerns matters like the number of properties that would experience more noise from specific routes.
Anyone who thinks they might be affected by the errors has been urged by look at the updated documents. The deadline for comments about the changes is 11.59pm on March 1.
Announcing the alterations, Highways England’s Drew Woodbridge says in a letter the mistakes came to light when it was looking through responses to the original consultation from August 30 to October 24 last year.
Mr Woodbridge, project manager for the south east regional investment programme, states: “As part of our work to collate and review the responses to the consultation, we identified some issues around the way certain pieces of information were presented.
“Following this, we undertook further reviews of the published documents and identified some errors.
“Please note that there are no changes to the designs of the six proposed scheme options. The new text only provides corrections to the existing information.
“Fundamentally, the overall conclusions of the assessment of the various options presented in the consultation materials haven’t changed.
“In many cases, the errors are minor technical technical corrections – for example, typographical or transcription errors in documents caused by human error.
“But, in some instances, we incorrectly stated the likely effect that an individual aspect, such as noise, would have on a particular scheme option – either positively or negatively changing the impact.”
One of the more serious examples given by Mr Woodbridge is the fact existing dwellings in Fitzalan Road would also experience significant adverse noise effects for the magenta option.
A more minor change is in the number of properties that would experience a moderate or greater noise level increase for the crimson option from 379 to 326.
The overall conclusions of the environmental assessment had not changed, said Mr Woodbridge.
A total of seven documents contained the errors, They included the public consultation document, the local roads study and the environmental assessment report.
“The majority of changes affect the environmental topics contained within the cultural heritage, landscape and visual, biodiversity, and noise and vibration chapters.
“A few changes affect the population and health chapter, as well as the road drainage and the water environment and climate change (greenhouse gases and vulnerability) chapters,” he added.
The amended documents can be seen at locations like Bognor Regis, Arundel, Littlehampton and Rustington libraries as well as Arundel Town Hall.